6 matches found
CVE-2026-50571
WebSub is a W3C recommendation produced by the Social Web Working Group. In recommendation REC-websub-20180123, the intent-verification protocol requires a subscriber to echo the hub.challenge value, also exposed as hubchallenge by some frameworks, but does not require safe response media typing ...
CVE-2026-50571 WebSub: Reflected script execution through intent-verification challenges
WebSub is a W3C recommendation produced by the Social Web Working Group. In recommendation REC-websub-20180123, the intent-verification protocol requires a subscriber to echo the hub.challenge value, also exposed as hubchallenge by some frameworks, but does not require safe response media typing ...
CVE-2026-50571 WebSub: Reflected script execution through intent-verification challenges
WebSub is a W3C recommendation produced by the Social Web Working Group. In recommendation REC-websub-20180123, the intent-verification protocol requires a subscriber to echo the hub.challenge value, also exposed as hubchallenge by some frameworks, but does not require safe response media typing ...
CVE-2026-50571 WebSub: Reflected script execution through intent-verification challenges
WebSub is a W3C recommendation produced by the Social Web Working Group. In recommendation REC-websub-20180123, the intent-verification protocol requires a subscriber to echo the hub.challenge value, also exposed as hubchallenge by some frameworks, but does not require safe response media typing ...
EUVD-2026-111412
WebSub is a W3C recommendation produced by the Social Web Working Group. In recommendation REC-websub-20180123, the intent-verification protocol requires a subscriber to echo the hub.challenge value, also exposed as hubchallenge by some frameworks, but does not require safe response media typing ...
CVE-2026-50571
The WebSub protocol (REC-websub-20180123) is vulnerable to reflected script execution because the intent-verification protocol requires echoing the hub.challenge value without requiring safe response media typing or disabled MIME sniffing. An attacker can redirect a victim to a crafted verificati...